Apple IIgs System Timing and the FPI
, Daniel Kruszyna
, Fast Processor Interface
The Apple IIgs has a split personality. Most of the machine runs at a ~1MHz clock rate, keeping compatibility with earlier Apple IIs. Some components, however, can be decoupled and run at a faster rate. The FPI, or Fast Processor Interface, is the chip responsible for coordinating the interactions between these personalities. In this KansasFest 2011 session, Daniel "Krue" Kruszyna includes a high level overview of the FPI's responsibilities, along with a detailed look at some particular cases, using signal measurements obtained from a real Apple IIgs.
Run time 62 minutes 19 secondsProducer Daniel KruszynaAudio/Visual sound, colorLanguage English
videographer: Ken Gagne